EP2669529A4 - Hydraulic system for construction machine having electronic hydraulic pump - Google Patents
Hydraulic system for construction machine having electronic hydraulic pumpInfo
- Publication number
- EP2669529A4 EP2669529A4 EP11856946.6A EP11856946A EP2669529A4 EP 2669529 A4 EP2669529 A4 EP 2669529A4 EP 11856946 A EP11856946 A EP 11856946A EP 2669529 A4 EP2669529 A4 EP 2669529A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- construction machine
- electronic
- hydraulic pump
- hydraulic system
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage valves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
- E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
- E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2282—Systems using center bypass type changeover valves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2296—Systems with a variable displacement pump
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
- E02F9/267—Diagnosing or detecting failure of vehicles
- E02F9/268—Diagnosing or detecting failure of vehicles with failure correction follow-up actions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical failure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/875—Control measures for coping with failures
- F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Reciprocating Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110007073A KR101762951B1 (en) | 2011-01-24 | 2011-01-24 | Hydraulic system of construction machinery comprising electro-hydraulic pump |
PCT/KR2011/010081 WO2012102488A2 (en) | 2011-01-24 | 2011-12-26 | Hydraulic system for construction machine having electronic hydraulic pump |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2669529A2 EP2669529A2 (en) | 2013-12-04 |
EP2669529A4 true EP2669529A4 (en) | 2014-12-10 |
EP2669529B1 EP2669529B1 (en) | 2017-11-01 |
Family
ID=46581239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11856946.6A Not-in-force EP2669529B1 (en) | 2011-01-24 | 2011-12-26 | Hydraulic system for construction machine having electronic hydraulic pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US9284719B2 (en) |
EP (1) | EP2669529B1 (en) |
KR (1) | KR101762951B1 (en) |
CN (1) | CN103328830B (en) |
WO (1) | WO2012102488A2 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8528684B2 (en) * | 2011-11-30 | 2013-09-10 | Deere & Company | Charge pressure reduction circuit for improved transmission efficiency |
EP2933387B1 (en) * | 2012-12-13 | 2019-08-14 | Hyundai Construction Equipment Co., Ltd. | Automatic control system and method for joystick control-based construction equipment |
KR101969175B1 (en) * | 2012-12-24 | 2019-04-15 | 두산인프라코어 주식회사 | Automatic transmission type excavator |
JP6220228B2 (en) * | 2013-10-31 | 2017-10-25 | 川崎重工業株式会社 | Hydraulic drive system for construction machinery |
WO2015171803A1 (en) * | 2014-05-06 | 2015-11-12 | Eaton Corporation | Low noise control algorithm for hydraulic systems |
US10487855B2 (en) * | 2016-09-29 | 2019-11-26 | Deere & Company | Electro-hydraulic system with negative flow control |
KR102423410B1 (en) * | 2017-03-21 | 2022-07-21 | 현대두산인프라코어 주식회사 | Method of driving a construction machine in an emergency and apparatus for performing the same |
CN112567141B (en) * | 2018-03-15 | 2023-04-14 | 日立建机株式会社 | Construction machine |
CA3097337C (en) * | 2018-07-11 | 2022-08-09 | Halliburton Energy Services, Inc. | Using a load sense pump as a backup for a pressure-compensated pump |
CN112805440B (en) * | 2018-10-02 | 2023-03-14 | 沃尔沃建筑设备公司 | Device for controlling working units of construction equipment |
CN111441416A (en) * | 2020-05-07 | 2020-07-24 | 金华深联网络科技有限公司 | Excavator operation control method and system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07133808A (en) * | 1993-11-11 | 1995-05-23 | Hitachi Constr Mach Co Ltd | Hydraulic drive unit of construction machine |
JPH09324443A (en) * | 1997-02-10 | 1997-12-16 | Komatsu Ltd | Control device for construction machine |
JPH10174512A (en) * | 1996-12-16 | 1998-06-30 | Yanmar Agricult Equip Co Ltd | Neutral detector for self-traveling vehicle |
JP2006097855A (en) * | 2004-09-30 | 2006-04-13 | Kobelco Contstruction Machinery Ltd | Travel control device for construction machine |
WO2009084853A2 (en) * | 2007-12-27 | 2009-07-09 | Doosan Infracore Co., Ltd. | Electric oil pressure system of construction equipment |
KR20100134332A (en) * | 2009-06-15 | 2010-12-23 | 볼보 컨스트럭션 이큅먼트 에이비 | Locking apparatus of control lever of construction equipment |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2670815B2 (en) | 1988-07-29 | 1997-10-29 | 株式会社小松製作所 | Control equipment for construction machinery |
US5138838A (en) * | 1991-02-15 | 1992-08-18 | Caterpillar Inc. | Hydraulic circuit and control system therefor |
JPH06213205A (en) | 1993-01-14 | 1994-08-02 | Hitachi Constr Mach Co Ltd | Oil pressure driving device of hydraulic machine |
JP3625149B2 (en) | 1999-03-31 | 2005-03-02 | コベルコ建機株式会社 | Hydraulic control circuit for construction machinery |
DE10124564A1 (en) * | 2001-05-14 | 2002-11-28 | Joma Hydromechanic Gmbh | Control of variable-displacement lubricant pump for use in internal combustion engine, involves measurement of engine parameters and matching pump delivery to engine requirements |
KR100641393B1 (en) | 2004-12-07 | 2006-11-01 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Hydraulic control circuit and method thereof |
US7905089B2 (en) * | 2007-09-13 | 2011-03-15 | Caterpillar Inc. | Actuator control system implementing adaptive flow control |
WO2010071344A1 (en) * | 2008-12-15 | 2010-06-24 | 두산인프라코어 주식회사 | Fluid flow control apparatus for hydraulic pump of construction machine |
-
2011
- 2011-01-24 KR KR1020110007073A patent/KR101762951B1/en active IP Right Grant
- 2011-12-26 US US13/981,161 patent/US9284719B2/en not_active Expired - Fee Related
- 2011-12-26 CN CN201180065660.2A patent/CN103328830B/en not_active Expired - Fee Related
- 2011-12-26 WO PCT/KR2011/010081 patent/WO2012102488A2/en active Application Filing
- 2011-12-26 EP EP11856946.6A patent/EP2669529B1/en not_active Not-in-force
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07133808A (en) * | 1993-11-11 | 1995-05-23 | Hitachi Constr Mach Co Ltd | Hydraulic drive unit of construction machine |
JPH10174512A (en) * | 1996-12-16 | 1998-06-30 | Yanmar Agricult Equip Co Ltd | Neutral detector for self-traveling vehicle |
JPH09324443A (en) * | 1997-02-10 | 1997-12-16 | Komatsu Ltd | Control device for construction machine |
JP2006097855A (en) * | 2004-09-30 | 2006-04-13 | Kobelco Contstruction Machinery Ltd | Travel control device for construction machine |
WO2009084853A2 (en) * | 2007-12-27 | 2009-07-09 | Doosan Infracore Co., Ltd. | Electric oil pressure system of construction equipment |
KR20100134332A (en) * | 2009-06-15 | 2010-12-23 | 볼보 컨스트럭션 이큅먼트 에이비 | Locking apparatus of control lever of construction equipment |
Also Published As
Publication number | Publication date |
---|---|
CN103328830B (en) | 2015-11-25 |
US9284719B2 (en) | 2016-03-15 |
EP2669529B1 (en) | 2017-11-01 |
KR20120085622A (en) | 2012-08-01 |
WO2012102488A2 (en) | 2012-08-02 |
US20130312403A1 (en) | 2013-11-28 |
EP2669529A2 (en) | 2013-12-04 |
KR101762951B1 (en) | 2017-07-28 |
WO2012102488A3 (en) | 2012-10-18 |
CN103328830A (en) | 2013-09-25 |
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